Harald Welte 9a75410a88 utils: Fix BER-TLV tag decode for multi-byte tags ...

We cannot simply skip anything that has 0xFF as first byte to detect
the padding after the end of a TLV object:

0xFF may very well be a valid first octet of a multi-octet TAG:

Tags of private class (11) with constructed (1) payload will have 0xFF
as first octet.

So let's expand the check to only detect padding in case of either only
a single byte FF being left, or two FF following each other [with
whatever suffix].

Change-Id: I5d64ce9ef1d973804daabae0b15c2e2349e6fab9

2021-10-21 14:23:19 +02:00

47 KiB

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